With the New Year upon us, so many people are making an effort to get into better shape. And that's a good thing for sure.

For some that means just finally getting off the couch and doing something -- anything to get the body moving. For others it means joining a gym, a group fitness class, a yoga studio, or some other structured group.

But beware, just joining a group doesn't always mean you will get fit, sometimes it can mean you'll open yourself up to getting hurt.